82results about How to "Meet leveling requirements" patented technology

The present invention relates to a time / digital converter based on FPGA and its conversion method, belonging to the field of time measurement technology. Said converter includes the following components: fine time measurement unit, coding unit, coarse time measurement unit and data buffer storage unit. The main application of said invention is to make high accuracy time measurement, it can be used in the fields of basis research and various application researches.

The present invention discloses an ultra-short wave radio terminal testing device which comprises a controller, a bus backplane, a calibrator and an ultra-short wave radio terminal. The bus backplane is connected to the controller and is also connected to a spectrum analysis module, a vector signal module and an RF switch matrix module at the same time. The RF switch matrix module is also connected to the spectrum analysis module and the vector signal module at the same time. The ultra-short wave radio terminal and the RF switch matrix module are connected through an attenuator. The RF switch matrix module is also connected to a transmitting antenna. The ultra-short wave radio terminal is connected to the controller and a receiving antenna at the same time. The controller is connected to an LCD screen, the calibrator and the ultra-short wave radio terminal. According to the ultra-short wave radio terminal testing device, through the above principle, the closed-loop measurement is used, the measurement process is easy to control, an automatic calibration test can be achieved, test result information is more stable and reliable, and the performance of a produced ultra-short wave radio terminal is more superior.

The invention discloses an end connection mechanism for an embedded power supply system. The end connection mechanism comprises two embedded supports and a bottom plate. Each embedded support comprises a body and a base; a conducting rail is arranged over the body of the embedded support. The embedded supports are fixedly mounted on the bottom plate through their bases. A connection box which can also be fixedly mounted on the bottom plate is disposed between the end embedded supports. The connection box is internally provided with a junction chamber. Two ends of the connection box are in connection fit with the adjacent ends of the embedded supports, respectively. The bottom plate is provided with cable holes admitting passage of cables. The end connection mechanism with the structure is simple in structure and convenient to mount, and the requirement for the level of installation of the embedded supports and the connection box is met; the embedded supports and the bottom plate are fixed by press-fitting of a mounting pressure plate, no structural damage of the embedded supports is required, the production process of the embedded supports is simpler, and the structural strength of the embedded supports can be improved.

Disclosed is a logging saw device guided by a guide groove, provided with an air blower and used for forestry. The logging saw device is used for sawing wood (9) and comprises a sawing execution portion (8) and a supporting portion (7), and the sawing execution portion (8) is supported on the supporting portion (7) and comprises a rotatable saw blade (81) and a driving portion (82) driving the rotatable saw blade (81) for rotation.

The invention discloses a 3D printer working platform and a positioning method thereof. The 3D printer working platform comprises the following components: a printing under-plate and a printing base-plate, wherein the printing under-plate is fixedly connected with at least one positioning pin and at least one step light-body positioning bead, and pin holes and positioning holes are formed in positions on the printing base-plate, corresponding to the positioning pins and the step light-body positioning beads. The 3D printer working platform has the benefits that the printing base-plate is fixedly installed on the printing under-plate by the positioning pins and the step light-body positioning beads to realize fixed and uniform force on the printing base-plate plane, so as to satisfy requirement for the levelness of a printing platform while improving fixed stability of the printing base-plate to prevent moving of the printing base-plate in various directions when being stressed, thus effectively reducing error ratios of layer staggering and warping of printed products to realize high-quality product printing. The positioning method using the 3D printer working platform is simple to operate and convenient to dismantle.

The invention discloses an antenna disposing method, device and system comprising: disposing a first group directional antenna and a second directional antenna on same antenna tower positioned at adjacent area of a first cell and a second cell; the coverage of first directional antenna being at first cell of high speed trunk line, the coverage of second directional antenna being at second cell adjacent to the first cell of high speed trunk line; controlling directional antenna gain of first group directional antenna whose radiation direction points to the first cell larger than gain of directional antenna of the second group whose radiation direction points to the second cell; and controlling gain of directional antenna of the second group whose radiation direction points to the second cell larger than gain of first group directional antenna whose radiation direction points to the second cell. The method, device and system of the invention expand switching area of adjacent cells for covering high speed trunk line.

The invention discloses a laser cutting machine splicing bed body and a splicing method. The bed body comprises at least two bed single bodies, the bed single bodies comprise two transverse bottom beams arranged in parallel and a plurality of longitudinal beams connected between the two transverse bottom beams, the top surfaces of the transverse bottom beams are machined for installing a linear guide rail and a convex table surface of a rack, the bottoms of the bed single bodies are provided with adjusting foundations, at least two splicing grooves are respectively formed in the bed single bodies, splicing blocks are arranged between the two adjacent bed single bodies, the splicing blocks are embedded in the splicing grooves of the two bed single bodies, positioning holes and connecting holes are formed in the splicing blocks, when the adjacent two bed single bodies are connected, a pin penetrates through the positioning holes to position the splicing blocks, the splicing blocks are fixed through a screw penetrating through the connecting holes, the two bed single bodies are spliced through the splicing blocks, the structure is simple, and through the adjusting foundation, the splicing bed body meets a higher level degree requirement.

The invention relates to high-strength support filter paper for tubular films and a preparation method of the high-strength support filter paper for the tubular films. The high-strength support filter paper is prepared from the following components: polyester fibers accounting for 20-30% in parts by weight, and functional fibers, wherein the functional fibers comprise special-shaped fibers accounting for 40-80% in parts by weight and bicomponent fibers accounting for 8-50% in parts by weight. The invention further discloses the preparation method of the high-strength support filter paper for the tubular films. Chemical-fiber laying nets are formed into paper in a hot-rolling manner by utilizing the thermal plasticity of fibers; crossed entanglement is utilized, so that the defect that the longitudinal and transverse tension for combing the laying nets is poor is overcome; the modern technique and the medium-high technique of hot rolling are utilized to enable the surface of filter paper to be smooth, so that the flatness requirements of scraped films are satisfied, the stability and the reliability of products are greatly improved, the technical requirements for tubular films, such as high strength, high pressure, and corrosion resistance, can be satisfied, and the preparation method provides a powerful support for sewage treatment, sea water desalination, medicine extraction and juice extraction.

The invention discloses a roof deformation joint structure of an automobile ramp. The roof deformation joint structure is characterized in that a deformation joint is perpendicularly formed in a slope-shaped roof which is used as the automobile ramp, a groove which is wider than the deformation joint is formed in a concrete flange on the periphery of a top opening of the deformation joint, and a cover plate capable of completely covering the deformation joint is arranged in the groove and is in smooth transition with the ramp; an intercepting ditch is formed in the ramp and is higher than the deformation joint; a water stop is arranged in the deformation joint; a drainage ditch is formed in the bottom of the deformation joint and is connected into a drainage vertical pipe. The roof deformation joint structure has the advantages that the structure is applicable to deformation joints which penetrate outdoor ramps, and is provided with smooth buildings and structures and multiple waterproof structures, and requirements on the running safety stability and comfort of automobile and waterproof and drainage requirements of indoor rooms under the ramp can be met.

The invention relates to a space mapping camera focal plane installation and adjustment device and method, and particularly relates to a computer-aided space mapping camera rapid installation and adjustment method, belonging to the technical field of spaceflight optical remote sensors. The focal plane installation and adjustment efficiency of a space mapping camera can be remarkably improved, thefocal plane can be rapidly and accurately adjusted, batch production is facilitated, and the development period of products is shortened; and the camera system integration can be completed by correcting the focal plane gasket for one time in the method, so that the situation that a conventional space mapping camera system integration needs a plurality of times of iteration is avoided.

The invention belongs to the technical field of preparation of photo-sensitive ceramic paste, and particularly relates to a homogenizing preparation technique of a zirconium oxide / aluminum oxide composite photo-sensitive paste based on SLA-3D (stereo lithography apparatus-three dimensional) printing. The homogenizing preparation technique comprises the following steps of (1) adding a composite ceramic powder containing aluminum oxide and zirconium oxide into an ethanol solution containing a dispersant, performing ball milling and dispersing, drying, and screening, so as to obtain the zirconiumoxide / aluminum oxide composite ceramic powder; (2) mixing an active thinner, a pre-polymer and a photo-initiator to obtain a photo-sensitive premix solution; mixing the photo-sensitive premix solution and a plasticizer, so as to obtain an organic solution; (3) uniformly mixing the prepared composite ceramic powder in step (1) and the organic solution in step (2), slowly evaporating the solution,and finally obtaining the homogenizing composite ceramic photo-sensitive paste. The prepared homogenizing composite ceramic photo-sensitive paste has the advantages that the content of solid is greater than 75 wt%, and the dispersing uniformity of the composite ceramic powder in organic resin is effectively guaranteed.

Methods and apparatuses are provided for a portable device to minimize power consumption of its measurement engine while maintaining a desired level of accuracy. One such method forms a control loop, in which a value of a metric indicating a difference between the current estimated accuracy and the desired level of accuracy is calculated and then filtered to produce one or more filtered values. Using the one or more filtered values and current values of one or more modifiable measurement parameters, new values for the one or more modifiable measurement parameters are generated and then used to take the next measurement.

The invention discloses a regenerant for aged asphalt and a preparation method thereof, and belongs to the field of road engineering. The asphalt regenerant of the invention is composed of the following ingredients (by weight): 10-20 parts of furfural extract oil, 10-15 parts of bisphenol A epoxy resin, 1-3 parts of glycidyl methacrylate, 1-3 parts of dimethyl phthalate, 1-3 parts of ethanol, 2-5parts of alicyclic epoxy resin, 5-10 parts of used oil, 2-5 parts of dibutyltin dilaurate, 1-3 part of cyclohexanone, 2-5 parts of epoxidized fatty acid methyl ester, 1-3 parts of petroleum ether, 1-3parts of epoxidized soybean oil, 1-5 parts of heavy oil and 1-3 parts of cycloalkyl distillate. The regenerant has characteristics of high temperature performance, excellent low-temperature crack resistance and strong ageing resistance and weather resistance, and is suitable for large-scale promotion and application.

The invention provides a reverse engineering scanning support which comprises a supporting platform (1), a foundation bed (6), a first regulating device (2) and three second regulating devices (3, 4 and 5), wherein the first regulating device (2) and the three second regulating devices (3, 4 and 5) are uniformly distributed between the platform (1) and the base (6) and are used for regulating the levelness of the platform (1); the first regulating device is used for regulating the gradient of the supporting platform through a telescopic; each second regulating device comprises a top plate B, a sliding panel, a base B, a wedge block A and a wedge block B; the top plate B is fixed to the lower surface of the platform, and the sliding panel is connected with the top plate B through a connecting rod; the base B is fixed to the foundation bed, and the wedge block A and the wedge block B are positioned between the sliding panel and the base B. The bottom of the sliding panel is composed of two inclined planes of which the included angle is a n obtuse angle, and each inclined plane is connected with the inclined plane of one wedge block in a sliding mode. The bottom surface of each wedge block is connected with the base B in the sliding mode. The distance between the two wedge blocks is changed, therefore the lifting of the sliding panel is controlled, and further the gradient of the supporting platform is regulated.

A hydraulically driven felling saw device for forestry is used for sawing woods (9) and comprises a sawing executing portion (8) and a supporting portion (7), wherein the supporting portion (7) supports the sawing executing portion (8); the sawing executing portion (8) comprises a rotatable saw blade (81) and a driving portion (82); and the driving portion (82) drives the rotatable saw blade (81) to rotate.

The invention provides a clearance-adjustable clamping, conveying and leveling machine. The clearance-adjustable clamping, conveying and leveling machine comprises a rack and a leveling roller group mounted on the rack, wherein the leveling roller group comprises upper compression rollers arranged in parallel and lower compression rollers arranged in correspondence with the upper compression rollers, and clearances are reserved between the adjacent roller groups; and the upper compression rollers are assembled on the rack and are driven up and down under the control of a hydraulic cylinder, and the hydraulic cylinder is arranged on the rack and connected with the upper compression rollers. The clearance-adjustable clamping, conveying and leveling machine further comprises a driving motor used for driving the upper compression rollers and the lower compression rollers to rotate, and the driving motor is controlled through a control cabinet. The structure is simple, stress can be uniformly and tidily distributed in a steel plate, product quality is reliable, and the service life is long. As the leveling effect is great, and the intelligent degree is high, the steel plate can be effectively leveled, the processing efficiency is improved, and convenience is brought to the leveling processing of metal plates. Besides, the upper compression rollers are driven and regulated through the hydraulic cylinder, the clearances between the upper compression rollers and the lower compression rollers are convenient to regulate, and the leveling requirements of different thicknesses of steel rolls are met.

The invention relates to a circular spherical-curvature-surface concave-dial type levelness measuring instrument. The circular spherical-curvature-surface concave-dial type levelness measuring instrument is characterized by comprising a spherical-curvature-surface concave dial, a glass ball, a chassis, a press plate, an observing window and zero-position adjusting devices, etc., wherein the glassball is a regular sphere body and is arranged in the spherical-curvature-surface concave dial; the spherical-curvature-surface concave dial is fixedly arranged on a base equipped with the chassis through the press plate and bolts; the spherical-curvature-surface shell-like concave dial is made of a transparent substance, uses a semi-spherical fixed point as the point of a zero scale, and is provided with concentric circular scale line between the zero-scale point and a large circle of a spherical curvature surface; altogether two sets of the zero-position adjusting devices are arranged and aremounted on the side surface of the base to form an angle of 90 degrees; and the bottom surface of the chassis is an annular datum plane. According to the invention, by ingeniously utilizing the characteristics that the lightweight glass ball automatically searches for the lowest point under the effect of gravity and the lowest point of the semi-spherical surface shell-like concave deviates from the zero-scale point after the semi-spherical shell-like concave dial deflects, the deviation angle and direction of the levelness of a measured plane are judged according to the degree that the glassball deviates from the zero-scale position of the semi-spherical dial.

The invention belongs to the chemical industry and in particular relates to a method for coating water-transferring printing backing paper. The method is characterized in that: the water-transferring printing backing paper is coated at one time by adopting a mixture prepared from the following components in the weight ratio of rubber powder to hydroxypropyl methylcellulose to polyacrylamide to water of 100:(1-5):(0.5-1):(250-350). The method comprises the following specific steps of: dissolving and stirring the rubber powder and the water in the ratio at the temperature of 85 to 95 DEG C at first; reducing the temperature to 45 to 55 DEG C, adding the proportionally prepared hydroxypropyl methylcellulose and stirring; after stirring, transferring the stirred glue into a reaction kettle of a high-speed stirrer, adding the proportionally prepared polyacrylamide and stirring. In the method, by adoption of one-time coating, the cost is lower and the yield rate is higher.

The invention provides a leveling device which comprises a leveling roller set. The leveling roller set comprises lower press rollers and upper press rollers which are arranged in parallel, the intervals between the adjacent upper press rollers are different, and the lower press rollers and the upper press rollers are staggered. The upper press rollers are assembled on a rack and controlled by hydraulic cylinders to be driven up and down. The hydraulic cylinders are arranged on the rack and connected with the upper press rollers. The leveling device further comprises a drive motor used for driving the upper press rollers and the lower press rollers to rotate and controlled through a control box. By the adoption of the leveling device, the upper press rollers and the lower press rollers are arranged at different intervals, so that the upper press rollers and the lower press rollers are stressed in a balanced manner in the steel roll leveling process. Under the condition that a steel roll receives the same force moment, the stress of the upper press roller and the lower press roller at the inlet end is reduced, and the problem that an upper press roller and a lower press roller at the inlet end are likely to break down is solved. In addition, the upper press rollers are adjusted through the hydraulic cylinders, the gaps between the upper press rollers and the lower press rollers can be adjusted conveniently, and the requirements for leveling steel rolls of different thicknesses can be met.

The invention relates to an installation structure body for a main reducer of a roller mill and an application method thereof. The structure body comprises a mill reducer, a reducer foundation slab and a mill foundation frame which are sequentially connected, wherein a packer is arranged between the reducer foundation slab and the mill foundation frame. The application method comprises the following steps: 1) putting the reducer foundation slab on the mill foundation frame, adjusting a leveling bolt to generate a certain distance between the reducer foundation slab and the mill foundation frame; 2) putting a protecting sleeve and a locating taper pin; 3) sealing the periphery of the reducer foundation slab by a baffle plate on the periphery of the reducer foundation slab; 4) pouring the packer, and 5) fixedly connecting the mill reducer, the reducer foundation slab and the mill foundation frame together through the connection of the reducer a bolt. The installation structure body disclosed by the invention has the advantages of conveniently dismantling, easily leveling the reducer foundation slab and the like compared with the prior art because the reducer foundation slab is movably connected with the mill foundation frame.

The invention discloses a roll paper leveling mechanism, comprising a rack, an anti-warping device, and a conveying device; the leveling mechanism is characterized by further comprising a humidifier for humidifying paper, and a dehumidifier for use in cooperation with the humidifier, and the anti-warping device is arranged between the humidifier and the dehumidifier. The roll paper leveling mechanism humidifies and softens greatly curled roll paper, and the softened roll paper may be quickly leveled by the anti-warping device; the roll paper is wet and soft and thus may not be damaged in the leveling process, and a better leveling effect can be achieved; furthermore, the roll paper, after being leveled, is dehumidified by the dehumidifier to keep flat.

The invention relates to a platform leveling device, in particular to a ground anchor net for an iron casting platform, which is designed for leveling the iron casting platform. The ground anchor net consists of ground anchor assemblies (A) and a ground anchor connecting steel angle (B). The ground anchor assemblies (A) are fixedly connected together by the ground anchor connecting steel angle (B). Each ground anchor assembly (A) comprises a ground anchor supporting assembly (a), a ground anchor height adjusting assembly (b), a ground anchor tightening bolt (c) and ground anchor fastening nuts (d), wherein the ground anchor supporting assembly (a) is connected with the ground anchor height adjusting assembly (b) and the ground anchor tightening bolt (c) respectively; and the upper and lower ground anchor fastening nuts (d) are connected with the two ends of the ground anchor tightening bolt (c) through threads respectively for fastening.

The invention discloses a forestry logging saw device guided by the aid of guide grooves. The forestry logging saw device is used for sawing a tree (9) and comprises a sawing executive portion (8) and a support portion (7). The sawing executive portion (8) is supported on the support portion (7) and comprises a rotatable saw blade (81) and a driving portion (82), and the rotatable saw blade (81) can be driven by the driving portion (82) to rotate.

The invention relates to a furnace rotating support structure comprising an upper support and a lower support, wherein the bottom surface of the lower support is provided with a bolt hole connected with a civil engineering embedded stone bolt; the upper support is arranged on the lower support and provided with a shaft hole pressed in a shaft sleeve; a rotating shaft is installed in the shaft sleeve; and a furnace rear wall rotating joint is supported on the rotating shaft. The furnace rear wall rotating joint is hinged with the upper support through the rotating shaft; a furnace titling central line is superposed with the central line of the rotating shaft; the installation elevation is adjusted through controlling the installation height of the lower support of a rotating support in the whole installation process; meanwhile, the installation level requirement can be met by controlling the level position of the upper support and the lower support of the rotating support. The rotating supporting structure is suitable for injecting and casting titling type welding and heat preserving furnaces.

A forestry felling saw device provided with a shield and guided by a guiding groove is used for sawing woods (9) and comprises a sawing executing portion (8) and a supporting portion (7), wherein the supporting portion (7) supports the sawing executing portion (8); and the sawing executing portion (8) comprises a rotatable saw (81) and a driving portion (82) which drives the rotatable saw (81) to rotate.

The invention relates to the field of measuring equipment, in particular to a tripod for building measurement. The tripod for building surveying comprises a connecting table, a workbench, a connectingassembly, an adjusting assembly and a foot stand assembly. The connecting table is connected with the workbench through the connecting assembly. The end face, away from the connecting table, of the workbench is provided with a working face for installing a measuring instrument. The foot stand assembly is connected with the connecting table so as to support the connecting table. The tripod for building surveying is simple in structure and convenient to operate, the levelness adjusting difficulty can be effectively reduced, meanwhile, the adjusting period can be shortened, and the levelness adjusting efficiency is improved.